Mosquitos, Dead Birds Test Positive For West Nile Virus In Contra Costa County

July 2, 2014 5:52 AM

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BRENTWOOD (CBS SF) — A group of mosquitoes and several dead birds found throughout Contra Costa County have tested positive for the West Nile virus in recent weeks, Contra Costa County Mosquito and Vector Control District officials said Tuesday.

Three dead American Crows found in Antioch, Brentwood and San Ramon tested positive for the virus along with a chicken and a group of mosquitoes in the Holland Tract, an area near Brentwood, district officials said.